Rimini Street director gets 44,117 RSUs, exercises units

Rimini Street, Inc. director Jack L. Acosta reported equity compensation activity involving restricted stock units (RSUs) and common stock.

Rhea-AI Filing Summary

Rimini Street, Inc. director Jack L. Acosta reported equity compensation activity involving restricted stock units (RSUs) and common stock. On June 2, 2026, 55,727 RSUs previously granted fully vested and were exercised into 55,727 shares of common stock, leaving no units from that grant outstanding. After this conversion, he directly held 329,721 shares of common stock.

On June 3, 2026, Acosta received a new award of 44,117 RSUs, each representing a contingent right to one share of common stock upon vesting. These RSUs will vest in full on the earlier of June 3, 2027 or the day before the company’s 2027 annual stockholder meeting, as long as he continues serving on the board.

Insider Trade Summary

55,727 shares exercised/converted

Exercise 3 txns

Insider ACOSTA JACK L

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	44,117	$0.00	$0.00
Exercise	Restricted Stock Units	55,727	$0.00	$0.00
Exercise	Common Stock	55,727	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 44,117 contracts (Direct); Common Stock — 329,721 shares (Direct)

Footnotes (3)

1. F1. Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.
2. F2. On June 4, 2025, the Reporting Person was awarded 55,727 Restricted Stock Units, 100% of which vested on June 2, 2026, or the day before the date of the Issuer's 2026 Annual Meeting of Stockholders.
3. F3. 100% of the Restricted Stock Units awarded will vest on the earlier to occur of (i) June 3, 2027 or (ii) the day before the date of the Issuer's 2027 Annual Meeting of Stockholders, contingent upon the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Key Figures

RSUs granted: 44,117 RSUs RSUs exercised: 55,727 units Common shares after exercise: 329,721 shares +3 more

6 metrics

RSUs granted 44,117 RSUs Awarded June 3, 2026 to Jack L. Acosta

RSUs exercised 55,727 units Converted to common stock on June 2, 2026

Common shares after exercise 329,721 shares Direct ownership following June 2, 2026 transaction

Underlying shares from new RSUs 44,117 shares One share of common stock per RSU upon vesting

Vesting date for new RSUs June 3, 2027 Or day before 2027 annual stockholder meeting, subject to service

Prior RSU grant date June 4, 2025 55,727 RSUs that fully vested June 2, 2026

Key Terms

Restricted Stock Units, contingent right, vest, derivative security, +1 more

5 terms

Restricted Stock Units financial

"Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting."

vest financial

"100% of the Restricted Stock Units awarded will vest on the earlier to occur of (i) June 3, 2027 or (ii) the day before the date of the Issuer's 2027 Annual Meeting of Stockholders"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

derivative security financial

"transaction_code_description: Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

Common Stock financial

"Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting."

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did Jack L. Acosta report at Rimini Street (RMNI)?

Jack L. Acosta reported exercising 55,727 restricted stock units into common stock and receiving a new grant of 44,117 RSUs. These transactions reflect routine director equity compensation rather than open-market buying or selling of Rimini Street shares.

How many Rimini Street (RMNI) shares does Jack L. Acosta hold after these Form 4 transactions?

After converting 55,727 restricted stock units into common stock, Jack L. Acosta directly holds 329,721 Rimini Street common shares. He also has 44,117 unvested restricted stock units outstanding, which may convert into additional shares if vesting conditions are satisfied.

What are the vesting terms of Jack L. Acosta’s new 44,117 RSU award at Rimini Street (RMNI)?

The 44,117 restricted stock units awarded to Jack L. Acosta vest 100% on June 3, 2027, or the day before Rimini Street’s 2027 annual stockholder meeting. Vesting is contingent on his continued service on the company’s board of directors through that date.

What happened to the 55,727 restricted stock units previously granted to Jack L. Acosta at Rimini Street (RMNI)?

The 55,727 restricted stock units awarded on June 4, 2025 fully vested on June 2, 2026. On that date, they were exercised and converted into 55,727 Rimini Street common shares, leaving no units remaining from that particular RSU grant.

What does each restricted stock unit (RSU) represent in Jack L. Acosta’s Rimini Street (RMNI) awards?

Each restricted stock unit represents a contingent right to receive one share of Rimini Street common stock upon vesting. Once vesting conditions are met, the RSUs convert into actual shares of common stock, increasing the holder’s direct share ownership.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/04/2026 - 04:39 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ACOSTA JACK L

(Last) (First) (Middle)

C/O 1700 S. PAVILION CENTER DRIVE

SUITE 330

(Street)

LAS VEGAS NEVADA 89135

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Rimini Street, Inc. [ RMNI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/02/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/02/2026		M		55,727	A	$0	329,721	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	06/02/2026		M			55,727	(2)	(2)	Common Stock	55,727	$0	0	D
Restricted Stock Units	(1)	06/03/2026		A		44,117		(3)	(3)	Common Stock	44,117	$0	44,117	D

Explanation of Responses:

1. Each Restricted Stock Unit represents a contingent right to receive one share of the Issuer's Common Stock upon vesting.

2. On June 4, 2025, the Reporting Person was awarded 55,727 Restricted Stock Units, 100% of which vested on June 2, 2026, or the day before the date of the Issuer's 2026 Annual Meeting of Stockholders.

3. 100% of the Restricted Stock Units awarded will vest on the earlier to occur of (i) June 3, 2027 or (ii) the day before the date of the Issuer's 2027 Annual Meeting of Stockholders, contingent upon the Reporting Person's continued service as a member of the Issuer's Board of Directors through such date.

Remarks:

	/s/ Celeste Rasmussen Peiffer, as Attorney-in-Fact	06/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)